Electro-adjustable condenser.



i latented Mags, 1910.

` H. GERNSBAGK. Y

ELECTRO ADJUSTABLE GONDBNSER,V

APPLICATION FILED JAN. 9, 1909.-

j Snom/Lto@ witnesses QD" l in wireless' te HUGO GERNSBACK, OF' NEWYORK., N. Y.

ELECTRO-ADJUSTABLE CONDENSER.

Specification Letters Patent.

Patented Mar. 8, 1910.

Application mea January 9, 1909. serial No. 471,405.

To all whom 'it may concern:

Be it known that I, Huso GnRNsBAcx, a subject of the Kingdom ofLuxemburg, and residing in the United States, in the city of New York,in the county of New York and State of New York, have invented certainnew and useful Improvements in`Electro- Adjustable Condensers, of whichthe following` is a full, clear, and exact specification.

his invention relates to electro-adjustable condensers, which c'onsistsof a plurality of Leyden or other jar condensers, for use in connectionwith commercial wireless telegraphy, and also for use in connection withthe conducting of experiments of all kinds egraphy and in all hightension work, for the pur ose vof changing or varying the capacity o theelectric circuit.

One object of`V this invention and of my improved construction is toenormously increase the sending radius of a wireless teleaph station, byincreasing the length of uration of the oscillations of the waves acrossthe spark gap, as well as rendering the waves considerably `morepowerful.

Another object is to provide an inexpensive electro-adjustable condenserwith a maximum simplicity of construction and of correspondingly highefficiency, and, by reason of my improved construction, the capacity ofw ich may be increased or decreased by simpl snapping into or pushing orpulling out o operative position in the frame, one or more Leyden jarsor other condenser jars. Another object of my invention is to constructan improved electro-adjustable condenser without the employment ofconnectin wires and vwithout the use of screws for ho ding the jars inplace, and to make leakage absolute y impossible.

Another object is to provide each of the jars at the bottom thereof witha spring clip, by means of which the jars may be snzppled into or out ofposition 1n the frame, an eld firmly by. thls means in conjunction withsmall iron or 'other metal knobs fastened in the bottom of the condenserframe and by means of circular indentations or recesses in the top ofsaid frame.

The foregoing and other objects-of my Y invention wlll be fullyunderstood from the following description and accompanying drawings, inwhich- Figure 1 is a front elevation of m improved electro-adustablecondenser, 1n its preferred form. ig. 2 -is a view in section,

taken o'n the line 2-2 of Fig. l, and Fig. 3 is a plan view of thespring clip provided at the bottom of each condenser jar. l

/Referring to the drawings (Fig. l) ,it will be seen that the frame orreceptacle 1 holds in operative position a lurality of condenser jars 2,by means o circular indentations or recesses 3 at the top of the frameon the inner side thereof, and by means of spring clips 4 provided atthe bottom' of said condensers, the said spring-clips 4 engaging the twogroups of small roundlmetal knobs 5, which latter are suitably fastened'to the bottom of the rectangular frame. The frame orreceptacle 1 maybemade of wood or any other suitable .materiah and the spring clip 4 mayconsists of hosphor bronze sheeting, or any other suitable metal.

When it is desired to remove one or more of the condenser jars 2, forthe purpose of changing or varying the capacity of the condenser, thesaid condenser jars, by reason of my)v improved construction, may beeasily pushed or pulled out of position, and when it is desired toincrease or changeythe capacity 0f the condenser, the said condenserjars may be readily snapped into the, frame and iirmly held therein bymeans of the said spring clips 4 and the circular recesses orindentations 3, in connection with the small round knobs 5.

The inner surface of the top of the frame 2, as well as the indentations3, is covered vwith metal foil 6, and which metal foil acts as asuitable conductor. The metal foil 6 is glued or pasted to the frame bymeans of glue or other adhesive liquid. The bottom portion of the frameis provided with two groups of small iron buttons or knobs 5,

and underneath the heads of said buttons Yrespective condenser jars 2,and are held in position by the knobs 5 and washers 7, which in turn aresuitably fastened to the bottom of the frame as above explained.

Referring to Fig. 3, it will be seen that. the spring clip 4 is providedwith a. round opening or recess 9 in the center thereof,

which is. adapted to engage the top of the knob 5. y

lt will be understood that my invention may be embodied in various otherforms and modifications not herein shown or described Without departingfrom the spirit or scope thereof, and I do not Wish .to be considered asconfining myself to the exact construction, instrumentalities ormaterials herein shown and described.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. The combination oit a frame, a conducting member fastened to theupper side of said frame, separate conducting members fastened to thebottom side ci? said trame, a plurality of condenser jars, andspringpressed means for supporting; .said condensers between theopposite sides of said frame.

2. The combination of a frame, a layer of metal foil fastened to theupper inner part of said frame, a plurality ci conducting members on thebottom ofsaid frame, a plurality or condenser jars,` and means forsupportingsaid condenser jars between the top and bottom of said framein such a manner that the metal foil forms an unbroken conductor betweenthe said condenser jars.

3. The combination of a rectangular frame having indentations ontheupper inner side thereof, a conducting member carried by said upperinner side 'and tting into said indentations, and means for supporting aplurality of condensers within said trame.

The combination of a rectangular frame having circular recesses on theinner up er side thereof, a iayer of metal :toil fastened) to said innerupper side and forming part o said circular recesses, a plurality orconn denser jars, and means Jfor removably supporting said condenserjars in such a manner that the conducting surfaces or" the'saidcondenser jars Contact with the said metal i'oil forming art ot saidcircular recesses,

5. The com ination of a rectangular frame, a conducting,l member on oneside thereof, plurality of rojectionson the opposite side thereof, conensers provided at their lower ends with spring-pressed means, adaptedto be supported between the said conducting member and the saidprojections and held in place by said springpressed means, and aconducting member connecting said condensers.

- l 6. The combination or a rectangular frame having indentations on theinner upper side thereof, a conducting member lued to said inner upperside and tting into said indentations, a plurality of buttons on thebottom portion of said frame, a plurality orn condenser jars adapted tobe carried by said frame and being held therein by said indentations andsaid buttons, and afplurality of conducting wires connecting saibuttons.

7 The combination in arectan'ular frame having recesses on one sidethereoi and round knobs at the opposite side thereof, means forfastening said knobs to said frame, a layer of metal foil asted on oneside of said frame and fitting into said recesses, a plurality ofcondenser jars adapted to be carried between said recesses and saidround knobs in such a manner that the contacting surfaces of saidcondenser jars complete the electrical circuit.

8. The combination of a receptacle composed of a top and bottomportionand two side portions, a conducting member carried by the toportion'and ttedv into indentations in saidp top portion, a plurality orbuttons divided into two groups on the bottom portion of said frame,connections between the buttons in each group independently andseparately from each other,'a plurality of condenser jars, s ringmembers on the said condenser jars a apted to contact with the saidbuttons tor retaining the condenser jars in position, and the to oi"said condenser jars being adapted to "t into the aforesaid indentations.i

9. The combination of a rectangular iframe having indentations on theinner upper side thereof, a layer oi metal toil lued to said inner upperside and iitting into said indentations, a plurality oi round knobsdivided into two grou s on the bottom side of said frame, means yorastenin said knobs tothe bottom of said frame, was ers between saidknobs and said fastening means, a plurality or" condenser jars providedwith spring clips at one end thereof, said spring clips being adapted toContact with said round knobs for retaining the condenser jars inoperative position, a piurality oi wires for connecting the respectivegroups of knobs with the source of supply or electric current, and meansiorholding said wires in dried position.

l0. The combination of a plurality oi condenser jars, each of which isprovided with a conicai end, a rectangular 'rame for supporting saidcondenser jars in operative 'J osition, ti e said i'rame being providedputti indentations at the top thereoi'i2 for receiving the said conicalends oi? said condenser jars and a continuous conducting member i'itte'into said indentations `for the purpose of electricallyconnecting thesaid condensers.

il. The combination of a, plurality or" condenser jars, one end of eachof which is oi conical conformation and the other end oi each of whichis provided with a spring clip,

withra. plurality of buttons for contacting nected with the source ofsupply and with 10 with -said spring clips for holding the conthe saidbttons respectively.

denser jars m, operative position, a'continu- In testimon whereof lI aixmy signature, ous conducting member fitted into said inin 'presence otwo witnesses.

dentations at the t0 0f the frame -:01`- the I pur ose of electrica 1yconnecting the said con ensers at one end thereof, a conducting wirevheld in position by said buttons at the bottom of the frame, said Wirebeing con- Witnesses:

CABL WrrmMANN, Orro Ro'rfm.

